Doped hydridosilane compositions, and method for producing same
View Patent ↗The present invention relates to compositions comprising at least one hydridosilane of the generic formula Si n H m with n≥5 and m=(2n) and (2n+2) and at least one compound of the formula H n B (OR) 3−n with R=C 1 -C 10 -alkyl, C 6 -C 10 -aryl, C 7 -C 14 -aralkyl, halogen, n=0, 1, 2, to processes for preparation thereof and use thereof.
1. A composition comprising:
(i) at least one hydridosilane of formula Si n H m
with n≥5 and
m=(2n) to (2n+2), and
(ii) at least one compound of formula H n B(OR) 3−n
with R=C 1 -C 10 -alkyl, C 6 -C 10 -aryl, C 7 -C 14 -arylalkyl, or halogen, and
n=0, 1, or 2.
2. The composition according to claim 1 ,
wherein the at least one hydridosilane is a hydridosilane oligomer prepared from a hydridosilane of formula Si x H 2x+2 with x≥3 or a cyclic hydridosilane of formula Si x H 2x with x≥5.
3. The composition according to claim 2 ,
wherein the hydridosilane oligomer is obtained via thermal oligomerization of a composition comprising, as hydridosilane, at least one hydridosilane of formula Si x H 2x+2 with x≥3-20 in the absence of a catalyst at a temperature of less than 235° C.
4. The composition according to claim 3 ,
wherein the hydridosilane of the formula Si x H 2x+2 is neopentasilane.
5. The composition according to claim 2 ,
wherein the hydridosilane of the formula Si x H 2x with x≥5 is cyclopentasilane.
6. The composition according to claim 1 ,
wherein the compound of the formula H n B(OR) 3−n has a formula H n B(OC 4 H 9 ) 3−n with n=1 or 2.
7. The composition according to claim 1 ,
further comprising at least one solvent.
8. The composition according to claim 3 ,
further comprising a hydridosilane of formula Si n H 2n+2 with n=5-9.
9. A process for preparing the composition according to claim 1 ,
comprising mixing the at least one hydridosilane, the at least one compound of the formula H n B(OR) 3−n and any further constituents.